Please help me with the following questions.

1.

\fFind the area of the surface generated by revolwng x : 21/9 7 y: 0 s y s 8 about the yiaxis. The area is (Simplify your answer Type an exact answer, using it as needed) Y Find the length of the curve X=J1I10 sec4t 1 at: on - 0 If. I: <: y j i :r:_ e : _ __ q the length ofthe euwex sec t on _y_ is . an exact answer using radicals as needed or round to nearest tenth.>